Electrical stimulation device



FIG. 1 is a perspective view of an electrical stimulation device showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines show portions of the electrical stimulation device that form no part of the claimed design. 

CLAIM The ornamental design for an electrical stimulation device, as shown and described. 